Improvement in stair and floor-plates



- mond, a square, a circle, and a liltirli iaiei @tutti e..

l Letters taaiev Nq. 109,651, dated November 29, 1870 metered November 26, 1870.

IMPROVEMENT IIN-STAIR` AND-FLOOR-PLATES.

The Schedule referred to in these Letters Patent and making parl: pf name.

Be it known that I, PETER W. Nnnnns, of the cit-y, county, and State of New York, have invented a new and Improved Stair and Floor-Plate; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing making part ot' this specification.

llie object of my invention is to vconstruct an elastic surface for floors, and for stall' and iioorplates.

In another application I have shown a method of constructing such a surface, by forming projections o'r studs, of uniform height, on a plate-of rubber, or other elasticmaterial, which studs project through peifforations in a plate of metal, and form the elastic surface desired. l

In the'present application, thegelastic surface is formed by securing, separately, elastic buttons or studs of uniform height in a iloor, or in a plate of wood or metal. L

In the drawing- Figure 1 represents a plan view of a sample licorplate.

Figure 2 in iig. 1. l

Figure 3 is a vertical longitudinal lsection at Y y in iig. 1.` l

Figure 4 is a vertical'longitudinal section at Z s in s- 1- f A I i 1- A represents the stair orloor-plate. It may be made of either wood or metal, as desired. y

In A are secured studs of elastic material, of uniform height, or nit/arly so, and of any desired size or shape. j I` The studs'arufarranged in cross or diagonal rows, or in a manner tife form any desired pattern.

The spaces between the studs. should be well dcned, so that the broom eanremorcqdirt collecting there, but' such ,spaces should notbe so large as to give an unequal bearing to the foot..-

The studs are preferably made ot' vulcanized India rubber, -buteither'of the various compounds of that Gr' other gums' may be employed. Cork.` mayl also be is a vertical longitudinal `'section at X a;

' fused for the'purpose.

.mln-the drawinge The studs are designated by figures vfrom 5 to 28, inclusive.

They are shown in the various shapes of a dia'- J star, and any other desiredv pattern may be used.

The studs are made in the -forrnpt a frustumgof a cone, or with their bases larger tl1z`i r1""their tops, as showrnin' th drawing, at 9, 15, 21, and 27, vand are placed 'in openings fin -ftbe` plate A of 'similar shape.

Preferably the studs. are introduced y.from below into the openings in the plate, but, it desired, they may also be compressed and forced in from the top, when they will expand and fill the enlarged portion of the opening.

In either case, when the plate is placed upon thc floor, the latter holds the studs firmly' in place against the inclined sidcs'ofthe opening.

In some cases I take apiece of rubber with parallel sides, of greater size than the top of the opening in plate A, and, compressing it, force it into the opening either from the bottom or the top, when it expands, and is secured in place substantially in the same manner as before.

In some cases I use cement to assist in securing the studs in place.

The drawing shows also ditiercnt methods of securing elastic studs in a plate of wood or metal.

For instance, in lthe line X x, fig. 1, as shown in section in iig. 2, thc studs arc'tormcd with tial; cn.- largcd bases, over and upon which thev plate A rests.

The studs 6, 7, 13, 19,24, and 25, in lines Y y and Z s, fig.1, andin Iigs. J and 4, represent straight pieces lof rubbcr'forced tightly into straight holes, or cemented therein with rubber or other suitable ecment.

larged ihtt bases, which lit intorcccsses in the bottom of the plate.

I propose iir some cases to simply bore holes a littlc way into 'the floor, or drill or cast the san1e art The studs 10, 16, 22,:1nd 2S are made with en- \\'ay.tli1'ough a plate, und force the studs tightly into the holes. A

rlhe holes-.may be larger at-tliclbottom than at t-he top, or cement maybc used `tolsecurc the .studs in place.

Either oi' 'these plans-.maybe used when it is dcsired to make an elastic surface for. halls, l'iassageways, or 'stairs where stillness is desirable, and may be used also on ships decks, engine-room floors, and elsewhere, to prevent the iect from slipping.

When .the studs are secured separately, as shown, I ot'ten put under the whole Hoor-plate a sheet ot' rnbber, to form an elastic bcd,land prevent the moisture from collecting on the wooden'tioor beneath. l

.This invention is also adapted to the lvarious use@l and applications mentioned in myspecllication for' patent on metallic and elastic stair-plate.

I1 claim as new and desire to vsecure by Letters Iatent- The combination of a wood or met-al stair or door plate withelastic studs 9, 15, 21, and 27, securedisnb stantially inthe maunershown and described.

' 'PETER W. NEEFUS.

Witnesses 2 Giras. E. EMERY, W. A. SKINKLE. 

